CN219806477U - Control system of multi-nozzle jet printer - Google Patents
Control system of multi-nozzle jet printer Download PDFInfo
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- CN219806477U CN219806477U CN202223092810.3U CN202223092810U CN219806477U CN 219806477 U CN219806477 U CN 219806477U CN 202223092810 U CN202223092810 U CN 202223092810U CN 219806477 U CN219806477 U CN 219806477U
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- 239000007921 spray Substances 0.000 claims abstract description 42
- 238000011010 flushing procedure Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Ink Jet (AREA)
Abstract
The utility model discloses a control system of a multi-nozzle jet printer, which is used for controlling a single spray head or a multi-spray head and comprises a negative pressure air source bottle and a positive pressure bottle, wherein a first three-way valve, a diaphragm pump and a second three-way valve are sequentially connected between the negative pressure air source bottle and the positive pressure bottle, the negative pressure air source bottle is connected with a high negative pressure sensor, the positive pressure bottle is connected with the positive pressure sensor, the control system of the multi-nozzle jet printer further comprises a first two-way valve, a second two-way valve and a negative pressure bottle, one end of the first two-way valve is connected with the negative pressure air source bottle, the other end of the first two-way valve is connected with the negative pressure bottle and the second two-way valve, the negative pressure bottle is connected with the spray head through a third three-way valve, and the negative pressure bottle is provided with the negative pressure sensor, and the second two-way valve is connected with the first three-way valve. The negative pressure air source bottle and the positive pressure bottle are used for realizing positive pressure flushing and negative pressure control of the spray head, and the negative pressure bottle and the negative pressure sensor are used for sensing the pressure of the spray head and accurately controlling the positive pressure and the negative pressure of the spray head.
Description
Technical Field
The utility model belongs to the field of 3D printing, and particularly relates to a control system of a multi-nozzle jet printer.
Background
The research on positive and negative pressure control in the use process of the spray type spray head in the current market is only limited to the spray painting machine industry and use occasions under low temperature conditions, and a corresponding positive and negative pressure control system and a control method thereof are absent for the occasions of the 3D ink-jet type equipment which needs to be used under high temperature working conditions. Because the ink ejected by the ink-jet type equipment is phase-change material, adhesive and the like which take paraffin as a base material, the positive and negative pressure control of the spray head in the existing ink-jet printer industry is not applicable, and therefore the combination of the high-temperature working condition and the positive and negative pressure control of the spray head which takes paraffin, adhesive and the like as the base material is particularly critical. In order to ensure excellent print quality at high print speeds, the printer is required to provide stable and accurate negative pressure control of the spray head according to printing requirements and realize normal positive pressure ink extrusion dredging function. If the negative pressure is too low, the ink can drop or hang under the action of gravity; if the negative pressure is too high, ink in the bottom plate of the spray head is sucked back, so that the spray resistance of the spray head is increased, and when the spray resistance is severe, no ink can be sprayed, and meanwhile, ink interruption occurs, so that the printing quality of a model is affected. The negative pressure control precision of the existing inkjet printer industry is too low, and the problems caused by unstable negative pressure are easy to occur.
Disclosure of Invention
One of the purposes of the utility model is to provide a positive and negative pressure control system suitable for single/multi-nozzle 3D ink-jet equipment, and meanwhile, the accurate and stable control of the nozzle negative pressure in the printing process can be realized, and the size of the positive/negative pressure value and the deviation range can be accurately adjusted.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a control system of multi-nozzle jet printer for control single shower nozzle or multi-shower nozzle, including negative pressure air source bottle and malleation bottle, connect gradually first three-way valve, diaphragm pump and second three-way valve between negative pressure air source bottle and the malleation bottle, negative pressure air source bottle is connected with high negative pressure sensor, the malleation bottle is connected with positive pressure sensor, control system of multi-nozzle jet printer still includes first two-way valve, second two-way valve and negative pressure bottle, negative pressure air source bottle is connected to the one end of first two-way valve, negative pressure bottle and second two-way valve are connected to the other end of first two-way valve, the shower nozzle is connected through the third three-way valve to the negative pressure bottle, the negative pressure bottle is equipped with negative pressure sensor, first three-way valve is connected to the second two-way valve.
The negative pressure air source bottle and the positive pressure bottle are used for realizing positive pressure flushing and negative pressure control of the spray head, and the negative pressure bottle and the negative pressure sensor are used for sensing the pressure of the spray head and accurately controlling the positive pressure and the negative pressure of the spray head.
Further, the first three-way valve is a two-position three-way reversing valve I, the second three-way valve is a two-position three-way reversing valve II, the first two-way valve is a two-position two-way electromagnetic valve I, the second two-way valve is a two-position two-way electromagnetic valve II, and the third three-way valve is a two-position three-way reversing valve III.
Further, a first throttle valve is connected between the negative pressure air source bottle and the two-position two-way electromagnetic valve I, and a second throttle valve is connected between the two-position two-way electromagnetic valve II and the two-position three-way reversing valve I. The accurate and slow pressure compensation of the negative pressure bottle of the spray head is realized through a stable air source and a throttle valve, and the influence of injection caused by the large negative pressure fluctuation due to negative pressure overshoot on the air inlet of the nozzle runner is avoided.
Further, a passage of the first three-way valve communicates with the atmosphere.
Preferably, the pressure in the positive pressure bottle is set at 20.+ -.3 kpa.
Preferably, the set value of the pressure in the negative pressure air source bottle is-7+/-1 kpa.
Preferably, the pressure in the negative pressure bottle is set to be-600+/-50 pa.
By adopting the technical scheme, the utility model has the following beneficial effects:
1. the pressure control during the positive pressure maintenance of the spray head is realized, the positive pressure value can be set, the optimal spray head maintenance effect is realized by adjusting different positive pressure values, and meanwhile, the damage to the spray head caused by excessive flushing pressure is avoided.
2. The negative pressure of the spray head can be accurately controlled, the negative pressure fluctuation of the spray head can be controlled in a small range, the accurate slow pressure compensation of the negative pressure bottle of the spray head is realized through a stable air source and a throttle valve, and meanwhile, the negative pressure control device has the function of slow pressure relief after overshoot pressure compensation.
3. The positive and negative pressure accurate control of single or a plurality of shower nozzles can be realized, the shower nozzle control device has universal applicability to equipment using different numbers of shower nozzles, and the positive and negative pressure control requirements of different numbers of shower nozzles can be realized only by adjusting the numbers of corresponding electromagnetic valves, negative pressure sensors and negative pressure bottles.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the air path of a control system of a multi-nozzle jet printer when the nozzle is being flushed at positive pressure.
Fig. 2 is a schematic diagram of the air path of a control system of a multi-nozzle jet printer when the negative pressure of a negative pressure air source bottle is maintained.
FIG. 3 is a schematic diagram of the air path of a control system of a multi-nozzle jet printer when the pressure in the negative pressure bottle is lower than a set value, and the control system is in accurate control maintenance of the negative pressure of the nozzle.
FIG. 4 is a schematic diagram of the air path of a control system of a multi-nozzle jet printer when the pressure in the negative pressure bottle is higher than a set value, and the control system is in accurate control maintenance of the negative pressure of the nozzle.
Detailed Description
A control system of a multi-nozzle jet printer as shown in fig. 1 is used to control a single nozzle or a plurality of nozzles, and in this embodiment, 3 nozzles 8A, 8B, 8C are controlled, taking the nozzle 8A as an example. The control system of the multi-nozzle jet printer comprises a negative pressure air source bottle 4 and a positive pressure bottle 5, wherein a two-position three-way reversing valve I1, a diaphragm pump 2 and a two-position three-way reversing valve II 3 are sequentially connected between the negative pressure air source bottle 4 and the positive pressure bottle 5, one channel of the two-position three-way reversing valve I1 is communicated with the atmosphere, the negative pressure air source bottle 4 is connected with a high negative pressure sensor 6, the high negative pressure sensor 6 is used for monitoring pressure change of the negative pressure air source bottle 4, the positive pressure bottle 5 is connected with a positive pressure sensor 7, the positive pressure sensor 7 is used for monitoring pressure change of the positive pressure bottle 5, the control system of the multi-nozzle jet printer further comprises a two-position two-way electromagnetic valve I9A, a two-position two-way electromagnetic valve II 10 and a negative pressure bottle 11A, one end of the two-position two-way electromagnetic valve I9A is connected with the negative pressure bottle 11A and the two-position two-way electromagnetic valve II 10A, the negative pressure bottle 11A is connected with a spray head 8A through the two-position three-way reversing valve III A, the negative pressure bottle 11A is connected with the negative pressure sensor 12A, and the two-position three-way electromagnetic valve II 10A is used for monitoring the pressure change of the negative pressure bottle 11A. A first throttle valve 14A is connected between the negative pressure air source bottle 4 and the two-position two-way electromagnetic valve I9A, and a second throttle valve 14D is connected between the two-position two-way electromagnetic valve II 10A and the two-position three-way reversing valve I1. The two-position two-way electromagnetic valve I9A and the two-position two-way electromagnetic valve II 10A are normally closed electromagnetic valves, and are communicated after power-on and disconnected when power-off.
The control system of the multi-nozzle jet printer of the embodiment realizes the functions of positive pressure flushing and negative pressure control on the spray head 8A through the negative pressure air source bottle 4 and the positive pressure bottle 5, and the positive pressure control system is used for sensing the pressure of the spray head 8A through the negative pressure bottle 11A and the negative pressure sensor 12A and accurately controlling the positive pressure and the negative pressure. The system realizes accurate and slow pressure compensation to the negative pressure bottle 11A of the spray head 8A through a stable air source in the negative pressure air source bottle 4 and the first throttle valve 14A, has the function of slow pressure relief after overshoot pressure compensation, and avoids damage to the spray head 8A caused by overlarge air flow.
A control method of a control system of a multi-nozzle jet printer comprises the step of controlling a nozzle 8A by adopting any one of positive pressure flushing of the nozzle 8A, high negative pressure maintenance of a negative pressure air source bottle 4 and accurate control maintenance of the negative pressure of the nozzle 8A.
As shown in fig. 1, the specific method for positive pressure flushing of the nozzle 8A is as follows: the two-position three-way reversing valve I1, the diaphragm pump 2 and the two-position three-way reversing valve II 3 are electrically operated at the same time until the pressure in the positive pressure bottle 5 reaches a set value through detection of the positive pressure sensor 7, then the operation is stopped, the two-position two-way solenoid valve I9A and the two-position two-way solenoid valve II 10A are not electrified, the two-position three-way reversing valve III 13A is electrified, and external air flows sequentially through the two-position three-way reversing valve I1, the diaphragm pump 2, the two-position three-way reversing valve II 3, the positive pressure bottle 5, the two-position three-way reversing valve III 13A and the spray head 8A, so that positive pressure flushing of the spray head 8A is realized.
As shown in fig. 2, a specific method for maintaining the high negative pressure of the negative pressure air source bottle 4 is as follows: when the high negative pressure sensor 6 detects that the pressure in the negative pressure air source bottle 4 is lower than a set value, the two-position two-way electromagnetic valve I9A, the two-position two-way electromagnetic valve II 10A and the two-position three-way reversing valve III 13A are not electrified, the diaphragm pump 2 is electrified to act and communicate the two-position three-way reversing valve I1 and the two-position three-way reversing valve II 3 until the detection value of the high negative pressure sensor 6 is higher than the set value, the operation is stopped, and air flows from the negative pressure air source bottle 4 to the outside through the two-position three-way reversing valve I1, the diaphragm pump 2 and the two-position three-way reversing valve II 3 in sequence.
As shown in fig. 3, a specific method for precisely controlling and maintaining the negative pressure of the spray head 8A is as follows: when the pressure in the negative pressure bottle 11A is lower than a set value, the electric action on the two-position two-way electromagnetic valve I9A slowly supplements the negative pressure bottle 11A through the first throttle valve 14A until the detection value of the negative pressure sensor 12A stops working within the range of the set deviation value, the air flow sequentially passes through the two-position three-way reversing valve III 13A, the negative pressure bottle 11A, the two-position two-way electromagnetic valve I9A, the first throttle valve 14A, the high negative pressure sensor 6 and the negative pressure air source bottle 4 from the spray head 8A, and the air flow is stored in the negative pressure air source bottle 4 until the pressure in the negative pressure air source bottle 4 is lower than the set value, so that the high negative pressure maintaining operation shown in fig. 2 is performed.
As shown in fig. 4, when the pressure in one of the negative pressure bottles 11A is higher than the set value, the electric action on the two-position two-way electromagnetic valve ii 10A slowly decompresses the negative pressure bottle 11A through the second throttle valve 14D until the detection value of the negative pressure sensor 12A stops working within the range of the set deviation value, and the air flow enters from the outside and sequentially passes through the second throttle valve 14D, the two-position two-way electromagnetic valve ii 10A, the negative pressure bottle 11A, the two-position three-way reversing valve iii 13A to the spray head 8A.
Preferably, the pressure in the positive pressure bottle is set at 20.+ -.3 kpa. The set value of the pressure in the negative pressure air source bottle is-7+/-1 kpa, and the set value of the pressure in the negative pressure bottle is-600+/-50 pa.
Based on the method, the air circuit can be built for three or more spray heads, and the control method is consistent by only increasing or decreasing the number of corresponding electromagnetic valves, negative pressure sensors and negative pressure bottles.
The above is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present utility model to solve the substantially same technical problems and achieve the substantially same technical effects are encompassed within the scope of the present utility model.
Claims (7)
1. A control system for a multi-nozzle jet printer for controlling a single or multiple nozzle jet, comprising: including negative pressure air source bottle and malleation bottle, the negative pressure air source bottle with connect gradually first three-way valve, diaphragm pump and second three-way valve between the malleation bottle, the negative pressure air source bottle is connected with high negative pressure sensor, the malleation bottle is connected with positive pressure sensor, the control system of multi-nozzle jet printer still includes first two-way valve, second two-way valve and negative pressure bottle, the one end of first two-way valve is connected the negative pressure air source bottle, the other end of first two-way valve is connected the negative pressure bottle with the second two-way valve, the negative pressure bottle is connected through the third three-way valve the shower nozzle, the negative pressure bottle is equipped with negative pressure sensor, the second two-way valve is connected first three-way valve.
2. A control system for a multi-nozzle spray printer as claimed in claim 1, wherein: the first three-way valve is a two-position three-way reversing valve I, the second three-way valve is a two-position three-way reversing valve II, the first two-way valve is a two-position two-way electromagnetic valve I, the second two-way valve is a two-position two-way electromagnetic valve II, and the third three-way valve is a two-position three-way reversing valve III.
3. A control system for a multi-nozzle spray printer as claimed in claim 2, wherein: the negative pressure air source bottle is connected with a first throttle valve between the two-position two-way electromagnetic valve I, and a second throttle valve is connected between the two-position two-way electromagnetic valve II and the two-position three-way reversing valve I.
4. A control system for a multi-nozzle spray printer as claimed in claim 2, wherein: a channel of the first three-way valve is communicated with the atmosphere.
5. A control system for a multi-nozzle spray printer as claimed in claim 1, wherein: the pressure in the positive pressure flask was set at 20.+ -.3 kpa.
6. A control system for a multi-nozzle spray printer as claimed in claim 1, wherein: the set value of the pressure in the negative pressure air source bottle is-7+/-1 kpa.
7. A control system for a multi-nozzle spray printer as claimed in claim 1, wherein: the set value of the pressure in the negative pressure bottle is-600+/-50 pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223092810.3U CN219806477U (en) | 2022-11-17 | 2022-11-17 | Control system of multi-nozzle jet printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223092810.3U CN219806477U (en) | 2022-11-17 | 2022-11-17 | Control system of multi-nozzle jet printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219806477U true CN219806477U (en) | 2023-10-10 |
Family
ID=88216123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223092810.3U Active CN219806477U (en) | 2022-11-17 | 2022-11-17 | Control system of multi-nozzle jet printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219806477U (en) |
-
2022
- 2022-11-17 CN CN202223092810.3U patent/CN219806477U/en active Active
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